Volvelle Denoville heures des marées dans un port
Author: phm - Observatoire de Lyon - France

texte1

Animation volvelle
Passage au méridien de la Lune
J.B. Denoville
ASSP Rouen

g = 10
α = 4.302236606166022 rad (slider from 0 to 6.283185307179586, step 0.008726646259971648)
ha: 2525.0 / g / 2.0
X2: (ha, -(ha))
X1: (-(ha), -(ha))
hb: 482.0 / g / 2.0
lb: 2948.0 / g / 2.0
X3: (-(lb), -(hb))
X4: (lb, -(hb))
P3: (sqrt(x(X3)^(2.0) + y(X3)^(2.0)); 180.0° + atan(hb / lb) + α)
P4: (sqrt(x(X3)^(2.0) + y(X3)^(2.0)); -atan(hb / lb) + α)
la: 2525.0 / g / 2.0